No Cabinet, No Vestibule
HE-XX

Indoor/Outdoor Vestibule
HE-VE

Separated Combustion Vestibule
HE-SE

No Cabinet, No Vestibule
HF-XX

Indoor/Outdoor Vestibule
HF-VF

Separated Combustion Vestibule
HF-SF

Indoor/Outdoor Cabinet
HF-FC

Separated Combustion Cabinet
HF-SC
